The Umarex Colt Defender is a licensed replica of the real 45 auto Colt Defender pistol. It is a close looking copy with the exception of the trigger mechanism. As the Colt Defender is almost all metal, you can't really complain too much about the durability aspects of this gun. Where I was let down a bit was the lack of functionality. In other words - parts that normally served a purpose like the hammer, slide release, sight adjustments and rear safety - all where just moulded into the metal gun and where only for show.